|
Barium Titanate or BaTiO3 is an excellent
photorefractive crystal for self-pumped phase conjugation, four-wave
mixing and many other photorefractive processes. It has high beam-
coupling
gain and short beam-coupling rise time. The highest SPPC reflectivity was
reported by using BaTiO3. It can be operated at visible and
near-infared
regions and is good for cw four-wave mixing with milliwatts
optical power.
Specifications:
| Crystal
structure |
Tetragonal,
4mm |
| Lattice parameters |
a=3.992 Å, c=4.036 Å |
| Density |
6.02g/cm3 |
| Hardness |
5 Mohs |
| Phase
transition temperature |
-90°C, 9°C,
132°C |
| |
|
Unclamped |
Clamped |
| Electro-optic
coefficients |
|
Unclamped |
clamped |
| |
r13 |
9.5 pm/v |
8
pm/v |
| |
r33 |
97
pm/v |
28
pm/v |
| |
r42 |
1460
pm/v |
820pm/v |
|
